The new guidebook doesn't print well as a booklet, even if you have a duplex printer. Not much you can do if you only have Acrobat Reader, but I used Acrobat Pro 8 to look at the file. It turned out they had put page 56 first in the file, not last, and that made my printer utterly confused. I just removed page 56, from its position before page 1, and then the file printed nicely as a booklet. It's one page short now, but the printer driver just fills in that last page with a blank, which it was supposed to be anyway.

This is just for you who perhaps want to print this file as a booklet. Now you know what to do.

A good reminder to finally dig into the Servo customisation features of the 1DX; I quickly got comfortable with everything else the 1DX offers, but that's ... one heck of a large subject and coming from the 5D2 I still lack a lot of experience with advanced AF!